Voltage Sag Detection Method Based on Wavelet Information

Da Hai Zhang; Cheng Yu Ge; Chen Chen; Xian He Han

doi:10.4028/www.scientific.net/AMM.740.470

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 740Voltage Sag Detection Method Based on Wavelet...

Voltage Sag Detection Method Based on Wavelet Information

Abstract:

Voltage sag is the major power quality problem and receives wide attention. Although wavelet analysis works well for detecting voltage sag features, the existence of noise can reduce the advantages of wavelet method or even make it ineffective. To solve the problem, the paper uses multi-scale wavelet information by multiplying the results of several scales, and then searches the local maxima from the product to find the transition moment of voltage sag. The proposed method can suppress the noise and improve the accuracy for detecting voltage sag features. Simulation result validates the effectiveness of the proposed method.

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Periodical:

Applied Mechanics and Materials (Volume 740)

Pages:

470-473

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.740.470

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Online since:

March 2015

Authors:

Da Hai Zhang*, Cheng Yu Ge, Chen Chen, Xian He Han

Keywords:

Multi-Scale Analysis, Power Quality, Voltage Sag, Wavelet Analysis

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* - Corresponding Author

References

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